tryphp_func_math_expm1.php:
<!DOCTYPE html> <html> <body> <?php echo(expm1(0) . "<br>"); echo(expm1(1) . "<br>"); echo(expm1(10) . "<br>"); echo(expm1(4.8)); ?> </body> </html>
0
1.718281828459
22025.465794807
120.51041751873